put back np's supperrior buffer2array, and fix my bug fix from change 4872

git-svn-id: https://svn.musicpd.org/mpd/trunk@4875 09075e82-0dd4-0310-85a5-a0d7c8717e4f

src/buffer2array.h

@@ -21,8 +21,12 @@
 
 #include "../config.h"
 
-int buffer2array(char *buffer, char ***array);
-
-void freeArgArray(char **array, int argArrayLength);
+/* tokenizes up to max elements in buffer (a null-terminated string) and
+ * stores the result in array (which must be capable of holding up to
+ * max elements).  Tokenization is based on C string quoting rules.
+ * The arguments buffer and array are modified.
+ * Returns the number of elements tokenized.
+ */
+int buffer2array(char *buffer, char *array[], const int max);
 
 #endif